2022MNRAS.516.1462T

Query : 2022MNRAS.516.1462T

2022MNRAS.516.1462T - Mon. Not. R. Astron. Soc., 516, 1462-1480 (2022/October-2)

The ALMaQUEST Survey X: what powers merger induced star formation?

THORP M.D., ELLISON S.L., PAN H.-A., LIN L., PATTON D.R., BLUCK A.F.L., WALTERS D. and SCUDDER J.M.

Abstract (from CDS):

Galaxy mergers are known to trigger both extended and central star formation. However, what remains to be understood is whether this triggered star formation is facilitated by enhanced star formation efficiencies (SFEs), or an abundance of molecular gas fuel. This work presents spatially resolved measurements of CO emission collected with the Atacama Large Millimetre Array (ALMA) for 20 merging galaxies (either pairs or post-mergers) selected from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey. Eleven additional merging galaxies are selected from the ALMA MaNGA QUEnching and STar formation (ALMaQUEST) survey, resulting in a set of 31 mergers at various stages of interaction and covering a broad range of star formation rates (SFRs). We investigate galaxy-to-galaxy variations in the resolved Kennicutt-Schmidt relation, (rKS: $\Sigma _{\textrm {H}_2}$ versus ΣSFR), the resolved molecular gas main sequence (rMGMS: Σ⋆ versus $\Sigma _{\textrm {H}_2}$), and the resolved star-forming main sequence (rSFMS: Σ⋆ versus ΣSFR). We quantify offsets from these resolved relations to determine if SFR, molecular gas fraction, or/and SFE is/are enhanced in different regions of an individual galaxy. By comparing offsets in all three parameters, we can discern whether gas fraction or SFE powers an enhanced ΣSFR. We find that merger-induced star formation can be driven by a variety of mechanisms, both within a galaxy and between different mergers, regardless of interaction stage.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: evolution - galaxies: interactions - galaxies: star formation

Simbad objects: 32

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Number of rows : 32
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2MASX J01512225+1303373 EmG 01 51 22.2646675392 +13 03 37.449707220           ~ 26 0
2 LEDA 1436253 G 01 52 19.0138929744 +13 38 02.597954460           ~ 16 0
3 LEDA 1470148 Sy2 01 56 12.5425291536 +14 54 23.931126684           ~ 38 0
4 SDSS J024112.93-005236.9 EmG 02 41 12.92572 -00 52 36.9675           ~ 16 0
5 Z 389-30 LIN 02 50 16.8601435080 +00 05 31.159280328   14.9       ~ 46 0
6 PB 6903 Sy1 02 50 57.4600838928 +00 22 09.774105168   16.0       ~ 39 0
7 2MASX J03080707+0027225 QSO 03 08 07.0697734992 +00 27 22.423613328           ~ 25 0
8 Z 390-14 Sy1 03 11 05.324 -00 32 47.54   15.85   14.75   ~ 52 0
9 Z 390-58 EmG 03 19 43.0391224711 +00 33 55.729212645   15.6       ~ 57 0
10 LEDA 1148827 G 03 19 47.8934250528 -00 13 16.138259400           ~ 21 0
11 Z 390-66 Sy2 03 20 33.2184294408 -00 20 23.845838172   15.4       ~ 44 0
12 Z 390-70 Sy2 03 20 43.1857210968 -01 00 08.162342424   16.10   14.60   ~ 48 0
13 LEDA 165365 Sy2 03 22 32.7813530712 -00 00 04.631038164   16.73   15.51   ~ 37 0
14 Z 390-81 G 03 23 41.3565416352 -00 07 01.296504552   15.3       ~ 24 0
15 LEDA 1143164 G 03 24 37.3243199520 -00 26 38.514390936           ~ 34 0
16 Z 390-87 G 03 25 38.386 -01 01 48.44   15.6       ~ 23 0
17 LEDA 13610 EmG 03 42 22.1499630480 -00 34 59.355529212   16   15.51   ~ 29 0
18 LEDA 176677 Sy2 03 50 47.7720143664 -07 01 43.618874808   15.69   14.41   ~ 31 0
19 LEDA 1553084 G 08 30 31.6895468640 +18 12 21.969341244           ~ 23 0
20 LEDA 153546 G 09 12 36.2945373552 +00 18 34.219340280           ~ 22 0
21 Z 126-52 G 11 26 59.7153892704 +21 08 29.996954232   15.7       ~ 33 0
22 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
23 Z 161-98 LIN 13 38 44.1265252152 +26 19 42.658657680   15.6       ~ 42 0
24 LEDA 65406 LIN 20 48 05.667 +00 04 07.83   16.8       ~ 34 0
25 LEDA 1189273 AGN 21 23 18.338 +01 15 17.93           ~ 36 0
26 LEDA 66696 EmG 21 24 17.3316702504 +01 01 42.060701388   16.2       ~ 24 0
27 Z 375-44 G 21 29 13.4469327096 -00 17 41.168532732   15.3       ~ 34 0
28 LEDA 1139140 G 21 31 38.1190593000 -00 36 29.439318312           ~ 16 0
29 LEDA 66961 G 21 33 37.8086032776 +01 04 15.349497960           ~ 16 0
30 LEDA 1380172 EmG 21 39 33.9721321800 +10 29 00.639195432           ~ 23 0
31 LEDA 1405185 G 22 11 19.3563402552 +12 11 04.986315564           ~ 22 0
32 IC 5177 G 22 11 34.2728016768 +11 47 45.435126912   15.2       ~ 52 0

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